Jeweler s clamp



(No Model.)

B. N. PARKER. JEWELERS CLAMP.

' No. 450,474. Patented Apr. 14,1891.

2015m 4 In NITED STATES PATENT Prion.

ERASTUS N. PARKER, OF SPRINGFIELD, MASSACHUSETTS.

JEWELERS CLAMP.

SPECIFICATION forming part Of Letters Patent No. 450,474, dated April14, 1891.

Application filed December 15, 1890- Serial hi0. 374,662. (No model.)

To aZZ whom it may concern:

Be it known that I, ERASTUS N. PARKER, of Springfield, in the county ofHampden and State of Massachusetts, have invented a new and usefulImprovement in Tools for J ewelers Use, of which the following is aspecification, reference being had to the accompanying drawings, formingpart thereof.

The present invention relates to that class of tools for jewelers usefor which Letters Patent No. 434,946 were issued to me on the 26th dayof August, 1890, consisting of a base or holder and clamping arms orjaws connected therewith for holding spectacle or eyeglass frames andother small articles while being soldered or brazed.

The object of my present invention is to provide a tool of this naturein which the clamping arms or jaws will have a capacity for independentadjustment in a variety of directions with a view to materiallyincreasing the number and variety of articles which can be held thereby.

To this end the invention consists in the tool constructed and operatingas hereinafter fully described, and particularly pointed out in theclaims.

Referring to the drawings, in which like letters designate like parts inthe several figures, Figure 1 is a side elevation of the tool, andillustrating one of the uses for. which it is adapted. Fig. 2 is aperspective view thereof, showing a different position of theclampingarms. Fig. 3 is a similar view showing the tool arranged to restupon a I table or bench and to hold a finger-ring or similar article.Fig. 4, by a similar View, shows the use of thebase and a singleclamping-arm, the other arm and the handle being removed from the base.Fig. 5 illustratesthe use of one of the clamping-arms and the handlewithout the base.

In my present device I employ two clamping arms or jaws a a, eachcomposed of two strips or bars a, which are preferably tapered to a dullpoint at their outer end, as shown, and provide a thumb-screw I),located near said outer end of said arms, to draw the two membersthereof together to clamp an stead, however, of connecting said arms attheir inner end directly to a holder, as in my previous device, Iconnect each of said arms to a block 0 by means of a thumb-screw 19,passing loosely through one member and a hole in the block and enteringa tapped hole in the other member, whereby the arm is adapted to have apivotal movement about the screw Z) as a center and by tightening thelatter to be rigidly held at any angle to which it may be adjusted. Saidblocks are themselves connected to a base d in such manner as to becapable of a pivotal adj ustment in a plane at a right angle to that ofsaid arms upon screws 17, and for this purpose said base d is madein theform of a round rod, and each of said blocks with a hole or socket toreceive said rod and with a thumbscrew 0 for securing it in any desiredposition upon the latter.

In practice I prefer to provide said blocks with two holes or socketsextending therethrough in planes at a right angle to each other, asshown, either of which holes is adapted to receive the rod d, and thuspermit said blocks to be set in such position that the arms a a areadapted to hold parts of any article which stand at a right angle toeach other. The base cl is provided at or near one end thereof with alateral extension d, standing at a right angle thereto, which, as shown,is made integral with the same, but which may be secured thereto bymeans of a socket and thumb-screw, if desired. Said extension enablesone of the arms a to be set out of alignment with the other arm, asshown in Figs. 2 and 3, whenever the shape of the article to be solderedor brazed renders such position necessary or desirable.

To enable the tool to be conveniently held in one hand, I' provide ahandle a, which at its outer end is suitably milled, as shown,'and atits inner end is threaded to adapt it to be screwed into a cap 6, whichcap contains a hole or socket to receive base d. Said handle whenscrewed against the base Within said cap is rigidly held in any positionto which it may be moved, and is adapted, by loosthe pivotal adjustmentof said arms upon blocks 0. The great capacity for adjustment thusafforded adapts the tool for a great variety of uses, of which I haveshown but five examples in the drawings. In Fig. 1 both clamping-armsare located upon the main portion of the base, with their work-receivingopenings parallel with each other, and handle 6 projects from theopposite side of the base in a plane parallel with said arms. In Fig. 2one of the arms is shifted to the extension cl of the base, itsworkreceiving open- 1 ing still remaining parallel with that of theother arm. In these two positions the tool is adapted for repairingdifferent parts of spectacle or eyeglass frames, as shown. In Fig. 3 thearms are moved nearer together, and their work-receiving openings standataright angle to each other, while the handle e is adjusted to aposition at substantially a right angle to said arms, thereby adaptingthe tool to rest upon atable or bench with the arms in averticalposition and enabling the operator to employ both hands in repairing thering or other article held by the arms. In Fig. i one of the arms andthe handle are removed from the base, and the latter supports theremaining arm in a vertical position, the lateral extension of the baseserving to steady saidarm in such position. In Fig. 5 one of the arms isutilized like an ordinary pair of tweezers, the thumb-screw 0 beingremoved from the end thereof and handle 6 being screwedinto said end tofacilitate holding the same. As before stated, these constitute but afew of the various positions of adjustment of which the tool is capable,and it will be obvious without further description that the tool has awide range of usefulness for jewelers use. By attaching the handle (2 tothe extension d of the base and folding the arms a to a positionparallel with the main portion of the latter the tool is reduced tocompact form for shipment or for being carried in the pocket.

Notwithstanding its capacity for a great variety of uses, the tooldevised by me is simple and inexpensive in construction, the severalparts thereof being entirely interchange- 3 able.

If desired, the rod d can be supported by a suitable stand adapted torest upon the table or bench; but I prefer to employ the handle 6, whichenables the tool to be held in the hand or rested upon the table, as maybe desired.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is-

I. The tool for jewelers use herein described, comprising, incombination, a base consisting of a round rod, a plurality ofclamping-arms mounted upon said rod and adjustable both longitudinallythereof and about the same as a center, each of said clampingarms beingcomposed of two strips or bars and having means, as a thumb-screw, fordrawing the outer ends thereof together, and a suitable handle orsupport for said base, substantially as set forth.

2. A tool for jewelers use, comprising, in combination, a baseconsisting of a round rod having at or near one end thereof a lateralextension standing at substantially a right angle thereto, a pluralityof clamping-arms, each being composed of two strips or bars providedwith a thumbscrew for drawing the outer ends thereof togetherandconnected at their inner ends to a block having therein a hole or socketto receive said base and provided with a clamping-screw for securing thesame in any adjusted position upon the latter, and a suitable handle orsupport for said base, substantially as set forth.

l. A tool for jewelers use, comprising, in combination, a base, aplurality of clamping arms mounted upon said base, each of which iscapable of pivotal movement about two different centers and in planesperpendicular to each other, each of said arms consisting of two stripsor bars provided with a thumb-screw for drawing the free ends thereoftogether, and a suitable handle for said base movable about the base asacenter, substantially as described.

t. A tool for jewelers use, consisting of a base in the form of a roundrod, a plurality of blocks, each having a hole or socket to receive saidrod and a clamping-screw for securing the same in any adjusted positionupon the latter, a clamping-arm pivotally secured to each of saidblocks, each of said arms consisting of two strips or bars provided witha thumb-screw for drawing the free ends thereof together, and a suitablehandle or support for said base, combined and operating substantially asdescribed.

1?). A tool for ewelers use, comprising a base consisting of a roundrod, a plurality of clamping-arms, and a handle, each of saidclamping-arms and said handle being independently adjustable upon saidbase both longitudinally of the latter and about the same as a center,substantially as set forth.

i. A tool for jewelers use, comprising, in combination, a baseconsisting of a round rod, a plurality of clamping -arms adjustablymounted upon said base, a cap provided with a hole or socket to receivesaid base and having a tapped hole leading into said first-mentionedhole or socket, and a handle having its inner end threaded and adaptedto enter said tapped hole in said cap and to bear against said base,whereby said handle is adapted to be adjusted longitudinally uponthebase and about the latter as a center, substantially as justablysecured to said blocks and provided set forth. With screws 1) fordrawing their free ends to- 10 7. In a tool of the kind described, thec0mgether, substantially as described. bination, with base d, havinglateral exten- ERASTUS N PARKER sion d, of blocks 0, having holes orsockets extending therethrough at a right angle to each Witnesses:

other to receive said base and provided with WV. H. CHAPMAN,clamping-screws c, and clamping-arms to, ad- J. E. CHAPMAN.

